Is the ternary lithium battery good?

Ternary lithium battery manufacturing materials Ternary materials refer to lithium nickel manganese oxide Li (NiCoMn) O, (NCM), a ternary composite cathode material precursor product, which uses nickel salt, cobalt salt, and manganese salt as raw materials. The ratio of nickel to manganese to manganese can be adjusted according to actual needs. Compared with lithium borates, ternary materials have the following significant advantages:> Low cost: Because they do not contain drills, the cost is only 1/4 of that of lithium borates and is greener. 》Good safety: The safe working temperature can reach 170℃, while the lithium sulphate is only 130℃, which greatly improves the safety of use and is beneficial to the personal safety of consumers. >High gram capacity: When the charging voltage is 4.6V (Lithium sulphate charging limit voltage is 4.2V), its gram capacity can be as high as 210mAh/g, and when the charging voltage is 4.8V, its gram capacity can be as high as 245mAh/g, which is equivalent to 1.7 times that of lithium borate. >The cycle life of the battery is extended by 45%. (1) Nickel drill manganese ternary material, it seems a bit of meaning of lithium nickelate mixed lithium drillate mixed lithium manganate, although this understanding is incorrect, but from the performance of the ternary material, such an understanding is not unreasonable : 1. Compared with lithium nickelate, the energy density of ternary materials is lacking, but the stability is greatly improved. 2. Compared with lithium sulphate, the platform of ternary material is slightly lower, and the maturity of the material is somewhat different, but the safety and cyclability, especially the feasibility of high charging voltage is higher. 3. Compared with lithium manganate, the safety of three yuan is much lower, but the high temperature performance and energy density have great advantages. ②. Perhaps it is because of the similarities and dissimilarities above that the actual use of ternary is in a very embarrassing situation: the current domestic ternary is generally a partial replacement for lithium borates, and is mixed with lithium manganate or lithium borates. Low-end consumer electronics products are mixed with lithium manganate for use in the low-end power market. The above three methods of use cover most of the domestic ternary market. In fact, looking at it roughly, it is not difficult to find that the use of ternary in the domestic market actually has only one purpose: to reduce costs. 1. In electronic products, the ternary is mainly used to replace the relatively high price of lithium drill acid, which cannot highlight the advantages of ternary materials such as long cycle life. 2. In the power market, ternary is mainly due to the relatively high cost of replacing energy density per unit volume (2) Energy density and voltage of ternary battery: The current voltage and energy density of ternary battery can be (>145mAh/g, 2.8~ 4.2V, 1C), cycle life (>500~800 times, 1C). The industry generally believes that the specific energy of power ternary battery cells can reach 300wh/kg in 2020. The consensus on the technical route is that the high nickel ternary anode is matched with the silicon carbon anode, which has already achieved a substantial breakthrough. The mid-term goal is based on lithium-rich manganese-based/high-capacity silicon-carbon anode, achieving a monomer exceeding 350wh/kg. According to the 2018 touring survey of relevant departments and sorting out the new energy vehicle promotion catalogue, it is found that the specific energy of the ternary battery cells mass-produced by all power battery companies is generally about 220wh/kg-240wh/kg, and the system energy density reaches 140wh/ kg-160wh/kg, compared with the monomer specific energy of 200wh/kg at the beginning of 2017, the system energy density of 120wh/kg has been greatly improved. Disclaimer: Some pictures and content of the articles published on this site are from the Internet, if there is any infringement, please contact to delete. Previous: Analysis on the classification of solar cells